Home / 878,129.28-1,211,816.64-475,722.24

Finding the Fourth Proportional to 878,129.28, 1,211,816.64 and 475,722.24

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Solution

The fourth proportional to 878,129.28, 1,211,816.64 and 475,722.24 is: 656,495.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,129.28 : 1,211,816.64 = 475,722.24 : x
  2. Step 2: Convert to fraction form
    878,129.28/1,211,816.64 = 475,722.24/x
  3. Step 3: Cross multiply
    878,129.28x = 1,211,816.64 × 475,722.24
  4. Step 4: Simplify right side
    878,129.28x = 576,488,126,450.07
  5. Step 5: Solve for x
    x = 576,488,126,450.07/878,129.28
  6. Step 6: Final answer
    x = 656,495.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.